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Sprayable PVA-ECC high-ductility cement-based composite material and preparation method thereof
The invention belongs to the technical field of composite materials, and discloses a sprayable PVA-ECC high-ductility cement-based composite material and a preparation method. The sprayable PVA-ECC high-ductility cement-based composite material is prepared from the following components in parts by mass: 10 parts of a cementing material, 5 parts of fine quartz sand, 0.003-0.006 part of cellulose HPMC, 0.02-0.1 part of a water reducing agent, 0.17-0.23 part of PVA fiber and 2.8-3 parts of water, and the PVA fiber accounts for 1.5 to 2 percent of the sprayable PVA-ECC high-ductility cement-based composite material. The sprayable ECC has relatively high impermeability and chemical corrosion resistance, and the rebound rate of concrete is controlled within 5%. The sprayable ECC is excellent in mechanical property, the compressive strength can reach 50 MPa, the uniaxial tensile strain is 3%-5%, and the sprayable ECC has the obvious multi-seam cracking phenomenon and strain hardening.
本发明属于复合材料技术领域，公开了一种可喷射PVA‑ECC高延性水泥基复合材料及制备方法，可喷射PVA‑ECC高延性水泥基复合材料按照质量份数由10份胶凝材料、5份精细石英砂、0.003‑0.006份纤维素HPMC、0.02‑0.1份减水剂、0.17～0.23份PVA纤维以及2.8‑3份水组成，PVA纤维占可喷射PVA‑ECC高延性水泥基复合材料为1.5～2％。本发明的可喷射ECC具有较高的抗渗性、抗化学腐蚀，混凝土的回弹率控制在5％以内。本发明可喷射ECC的力学性能优异，抗压强度能达到50MPa，单轴拉伸拉应变在3％～5％，有明显的多缝开裂现象和应变硬化。
Sprayable PVA-ECC high-ductility cement-based composite material and preparation method thereof
The invention belongs to the technical field of composite materials, and discloses a sprayable PVA-ECC high-ductility cement-based composite material and a preparation method. The sprayable PVA-ECC high-ductility cement-based composite material is prepared from the following components in parts by mass: 10 parts of a cementing material, 5 parts of fine quartz sand, 0.003-0.006 part of cellulose HPMC, 0.02-0.1 part of a water reducing agent, 0.17-0.23 part of PVA fiber and 2.8-3 parts of water, and the PVA fiber accounts for 1.5 to 2 percent of the sprayable PVA-ECC high-ductility cement-based composite material. The sprayable ECC has relatively high impermeability and chemical corrosion resistance, and the rebound rate of concrete is controlled within 5%. The sprayable ECC is excellent in mechanical property, the compressive strength can reach 50 MPa, the uniaxial tensile strain is 3%-5%, and the sprayable ECC has the obvious multi-seam cracking phenomenon and strain hardening.
本发明属于复合材料技术领域，公开了一种可喷射PVA‑ECC高延性水泥基复合材料及制备方法，可喷射PVA‑ECC高延性水泥基复合材料按照质量份数由10份胶凝材料、5份精细石英砂、0.003‑0.006份纤维素HPMC、0.02‑0.1份减水剂、0.17～0.23份PVA纤维以及2.8‑3份水组成，PVA纤维占可喷射PVA‑ECC高延性水泥基复合材料为1.5～2％。本发明的可喷射ECC具有较高的抗渗性、抗化学腐蚀，混凝土的回弹率控制在5％以内。本发明可喷射ECC的力学性能优异，抗压强度能达到50MPa，单轴拉伸拉应变在3％～5％，有明显的多缝开裂现象和应变硬化。
Sprayable PVA-ECC high-ductility cement-based composite material and preparation method thereof
可喷射PVA-ECC高延性水泥基复合材料及制备方法
GU YIN (author) / SUN YING (author) / HUANG XINYI (author) / CHAO PENGFEI (author) / MAO GUIJUN (author)
2021-05-04
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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